mirror of
https://github.com/CTCaer/hekate.git
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147 lines
4.2 KiB
C
147 lines
4.2 KiB
C
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2016 */
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/*-----------------------------------------------------------------------*/
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/* If a working storage control module is available, it should be */
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/* attached to the FatFs via a glue function rather than modifying it. */
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/* This is an example of glue functions to attach various exsisting */
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/* storage control modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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#include <string.h>
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#include "diskio.h" /* FatFs lower layer API */
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#include "../../../../common/memory_map.h"
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#include "../../storage/nx_emmc_bis.h"
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#include "../../storage/nx_sd.h"
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#include "../../storage/ramdisk.h"
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#include "../../storage/sdmmc.h"
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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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BYTE *buff, /* Data buffer to store read data */
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DWORD sector, /* Start sector in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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switch (pdrv)
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{
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case DRIVE_SD:
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return sdmmc_storage_read(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
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case DRIVE_RAM:
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return ram_disk_read(sector, count, (void *)buff);
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case DRIVE_EMMC:
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return sdmmc_storage_read(&emmc_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
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case DRIVE_BIS:
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return nx_emmc_bis_read(sector, count, (void *)buff);
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}
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return RES_ERROR;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_write (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Start sector in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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switch (pdrv)
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{
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case DRIVE_SD:
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return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
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case DRIVE_RAM:
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return ram_disk_write(sector, count, (void *)buff);
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case DRIVE_EMMC:
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case DRIVE_BIS:
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return RES_WRPRT;
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}
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return RES_ERROR;
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}
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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static u32 part_rsvd_size = 0;
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DRESULT disk_ioctl (
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BYTE pdrv, /* Physical drive nmuber (0..) */
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BYTE cmd, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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DWORD *buf = (DWORD *)buff;
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if (pdrv == DRIVE_SD)
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{
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switch (cmd)
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{
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case GET_SECTOR_COUNT:
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*buf = sd_storage.sec_cnt - part_rsvd_size;
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break;
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case GET_BLOCK_SIZE:
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*buf = 32768; // Align to 16MB.
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break;
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}
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}
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else if (pdrv == DRIVE_RAM)
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{
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switch (cmd)
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{
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case GET_SECTOR_COUNT:
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*buf = RAM_DISK_SZ >> 9; // 1GB.
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break;
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case GET_BLOCK_SIZE:
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*buf = 2048; // Align to 1MB.
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break;
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}
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}
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return RES_OK;
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}
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DRESULT disk_set_info (
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BYTE pdrv, /* Physical drive nmuber (0..) */
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BYTE cmd, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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DWORD *buf = (DWORD *)buff;
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if (pdrv == DRIVE_SD)
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{
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switch (cmd)
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{
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case SET_SECTOR_COUNT:
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part_rsvd_size = *buf;
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break;
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}
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}
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return RES_OK;
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}
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